Parkinson, A. (1980). A First Year Engineering Drawing (2nd Ed.). A H Wheeler.
शिकागो स्टाइल उद्धरणParkinson, A.C. A First Year Engineering Drawing. 2nd Ed. Allahabad: A H Wheeler, 1980.
एमएलए उद्धरणParkinson, A.C. A First Year Engineering Drawing. 2nd Ed. A H Wheeler, 1980.
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